PURPOSE: To establish a grinding condition for the roll as a condition to stablize a lubricating state in rolling to obtain an excellent rolling precision in the cold rolling for a metal plate.
CONSTITUTION: The final sending pass in a roll grinding time for a cold rolling work roll is set so that the angle (spiral angle) θ of a spiral grinding stripe pattern 2 generated on the roll surface in a grinding time to the roll axis 3 comes within the range of 90±5 degrees and is desired to come within the range of 90±2 degrees. As a result, when the frictional coefficient by the roll is selected by the lubrication condition in a cold rolling for the metal plate, the dispersion for the rolling condition can be eliminated and a target rolling condition can be settled nearly.
INABA MITSUNOBU
HASHIMOTO ITARU
HIROWATARI ATSUSHI
